NORTH PROVIDENCE, R.I. (WPRI) — Police are investigating after a man stabbed his father during an altercation Monday afternoon, according to North Providence Police Chief Alfredo Ruggiero.

Ruggiero tells 12 News officers were called to a home on Whipple Avenue around 3:40 p.m. for reports of a stabbing.

Officers arrived to find 65-year-old Steven Kerzner suffering from a stab wound to his throat and blunt force trauma to his head, according to Ruggiero. He was rushed to the hospital in critical condition.

Ruggiero said Kerzner’s 60-year-old girlfriend suffered a head laceration during the altercation, but she is expected to be OK.

Kerzner’s son, identified by police as 36-year-old son Dayne Kerzner, was immediately taken into custody and charged with felony assault.

Ruggiero said Dayne Kerzner has been ordered held without bail pending his formal arraignment on Tuesday.

Investigators still trying to piece together the events leading up to the stabbing.